Chaeles c



( No Model.)

0. C. PEGK 86 W. H. CHAPMAN.

ELECTRIC MOTOR.

I Patented June 5, 1883.

Charles 0. Beck,

WilliamwJil Chapmwv,

Attorney.

N, PETERS. Fbwwirllvognpher. Whshmglnu D. c

UNITED-.- STATES-- OFFICE.

CHARLES c. PECK-AND WILLIAM GHAPMAN, or MIDDLEBURY, vr.

ELECTRIC MOTOR.

SPECIFICATION formingpart of Letters Patent No. 279,008, dated June 5, 1883.

Applicationfiled January 15, 1883.

(No model.)

pieces interposed between said pole-pieces,

and is an improvement upon the invention patented to us December 19, 1882; and it consists, essentially, of a system composed of two or more magnets, permanent or electro, and another system composed of a like number of soft-iron armatures wound with suitable conducting-coils, the members of one system being arranged to rock or roll upon or in con tact with the members of the other system, and to be so moved relative thereto that each mem- 2 5 her of both systems is constantly exerting both anattractive and a repulsiveforcei. 0., each member of each system will attract one mem-.

ber and repel. another member of the other system.

It fnrtherconSists in certain novel constructions, arrangements, and combinations of parts,

which will be best understood by reference to the description of the drawings, and to the claims-to be hereinafter given.

In the accompanying drawings, :forming a part of this specification, we have illustrated our invention as-embodied in a machine having two electro magnets and two soft-iron armatures provided with electric coils, in which 40 drawings- Figure 1 is a side elevation; Fig. 2, an end.

elevation; Fig. 3, an elevation of the opposite end. :Fig. l,-looking toward the left. Fig. 5 is a 5 partia1 horizontal section on line 3/ y on Fig. 2, looking upward. Fig. (l is a partial plan of one of the side frames, two polc-pieces, and the non-magnetic filling piece; and Fig. v7 is a diagranrillustrating the electric circuit. I 5Q A and Aare two brass end framesprovided withsuitable feet, a a, to support them in upshown in Fig. 3.

Fig. 4 is a vertical section on line m 00 on.

rightpositions, and connected together by the cores I) and b of themagnets B and B, said cores having shanks or reduced portions formed upon their ends, which pass through the cresentshaped pole-pieces N, S, N, and S, and through the frames A and A, and have fitted thereto suitable binding-nuts, c c, as shown.

Each of the cores I) and I) has fitted thereon two brass collars, (Z (I, constructed and applied in the same manner as described in another application of ours of even date, and has wound thereon between said collars a coil of conductingwire. secured by the middle of their lengths to the ends of the cores 1) and b, and are so shaped and arranged that the ends of two opposing The pole-pieces N, N, S, and S arepole-pieces approach each other, and are separated by filling-pieces e e, of brass or other non-magnetic material, cast with or secured to the frames A and A, as shown in Figs. 4 and 6.

' C and (Y are two levers mounted by their centers upon the shaft G", which has its bearings in the centers of the frames A and A, and provided at each end thereof with a sliding box, f, in which are mounted, so as to revolve therein, the two soft-iron armatures D and D, arranged, respectively, above the upper ends and below the lowerends of the pole-pieces N, S, N, and S, as shown. The pole-pieces are soshaped that the outer surfaces of their up per and lower portions are concentric with the axis of the shaft G and the armatures D and D are so constructed and arranged that their end portions rest upon and roll in contact with said pole-pieces and the filling-pieces e e, the armature l) resting thereon by its own weight, and the armature D being pressed upward thereto by the coiled springs g, set in the arms or levers O and O, beneath the boxes f, as Each of the armatures D and D has secured thereon two brass collars, h h, constructed and applied thereto in the same manner as described in. our other application before referred to, and said armatures have wound thereon the coils D and D, re-

spectively, said coils being confined between the collars h h, as shown.

Tothe outer surface of the lever 0, near the middle of its length, is secured the rectangular bar of hard rubber, E, in such a manner as to insulate from the l'rame ot' the machine the brass spring-plates t and], secured to the outer side thereof, as shown in Figs. 1. and 2. The spring Hates i and j pl'QltCl', respectively, above and below the rubber :insulating-bar E, and bear at their free ends upon the wires 2" and J", set in the ends of the armatures l) and 1'), re-

spectively, but insulated therefrom, said wires 1" and j being connected at their inner ends with the inner ends ot the coils l)" and T)", re spectively.

lo the outer surt'aee ot' the spring-plate i are secured the two contact-ears It" and l, and to the outer face of the spring-plate is secured the middle contact-ear, m, said ctmtaet-ears being located to one side of the axis of motion of the levers (l and so that they partake of the vibratory movement of said levers.

()ne of the shanks ot' the core I) of the mag net B is made of eonsit'lerably greater length than the others, so as to exteml through the long hub n, l'ormed upon the outer side of the l'rame A, and through the commutatonbar l, of hard rubber, which is clamped in a lixed po sition thereon by the binding-nut c, all as shown in Fig.5.

lhe bar I! has set therein the rods 11 a and u n, to the ends of which are connected, re spectively, the commutator-springs o and p, substantially in the same manner as described in another tl1)]')ll(itltlt)ll, by one of the parties hereto, of even date herewith.

(l is a rectangular frame pivoted by the cenler ot' its end bars, to the 'l'rames A and A, near their upper ends, or in such a position that the central portions ol the upper surfaces of said end bars shall bear such a relation to the upper surfaces of the pt'ile-pieces and the tilling-pieees inserted between them, and in such positions relative to the armature l), as to be acted upon thereby to vibrate it about its pivots as said armature rocks or rolls from one magnetic held to another, moving in a path concentricto the axis oi't'he levers C and (,l.

The two side bars, g", of the frame (l are provided at or near the middle ot' their lengths with the ears y, as a means ot'attaching thereto one or more eonnectingrods, or other means ot' transmitting motion to a pump or other mechanism.

The central portions ot'the bars otfthe frame (l maybe eurvedin thereverse directiontothc curves of t1l1e )ole-pieces, as shown; or they may be straight or curved in the same direction as the curve of said wlc-pieces, but to a greater radius, and operate to produce substantially the same result in principle--viz., vibrating said frame about its pivotal axis by virtue of the direct pull of the attractive force of the magnets upon the soft-iron armature as said armature is rolled. from one n'iagnetic held to another and back again, the. different:- eonditions named only tending to vary the stroke of the frame G without changing the principles of its operation.

The several parts ot'the apparatus are con.-

nected electrically as tbllows: The outside end of the coil ot'thc magnet 15 is comiectedbythe wireq to the battery H or other source ot'supply of electricity. The innerend of said coil ol' the magnet-B is connected by the wire rto the inner end of the coil of the magnet 1-3, the outer ,end of said latter coil with the commue tator-spring o by the wire)", and the commutater-spring p to the opposite pole of the battery H by the wire r thus completing the circuit of the system of magnets. The inner end of the coil 1.) of the arn'iature l) is connect ed through the wire i and spring-platei to the contact-ears 7. and l. The inner end of the coil D of the armature l) is connected. through the wire j and the spring-plate j to the contact-ear m, and the outer end o'l. each. of said armature-coils is soldered to one ot' its coil heads or collars h, and the armature-coils are thus connected through the frame of the machine with each other. The arimituiecircuit is rendered ct'nnplete only by connection with the circuit through the magnet system, and this connection is made by the contact of the springs oandp, respectively, with the contact ears in and 7a or and m, said springs o and p being alternzitely curved in oppositedirections by the vibratory movements ot' said contaetears due to the vibrations of the armature carrying lever (,l', by which said eontact ears are carried. it permanent magnets are used, the magnet-coils shown in the drawings will be omitted, and the electric ei rcuit will be from one pole of the battery to the spring 0, thrmigh the contact-ear 'm to the inner end. of the coil D, through said coil, through the frame of the machineto the outer end of the coil I)", through said coil, and thence through the contact-ear k to the spring p, and thence to the other pole of the battery.

It will be seen thatthcnonmagnetie tiltingpicees bctweenthc upper and lower ends ot' the polepieces N, N, S, and S, are made ot'dil ferent widths, and as a eonscqt'ienee the upper and lower ends of said pole-pieces are at ditt'ercnt distances apart, the object of which is to increase the stroke or length of movement of the armature by virtue ol the t'actthat when one armature has reached the point on the magnet which is attracting it, where its movement in that direction would natu ally cease, the opposite magnet has i ust reached the point where the i'nagnet toward which it is being attracted is exerting its greatest attracting force thereon, and thereby compels said armaturc to move through a greater stroke than it otherwise would.

\Vhat we claim as new, and desire to secure by Letters Patent ot' the United States, is

1.. In an electric apparatus, the combination of a system composed of two or more magnets,

permanent or cleetro, and another system com posed of a like number 0.1. soft-iron armatures wound with suitable conducting coils, the members of one system being arranged to rock or roll upon or in contact with the members of the other system, and to be so moved relative thereto that each member of both systems is constantly exerting both an attracting and a repelling force, substantially as and for the purposes described.

2. The combination, in an electric apparatus, of two soft-iron armatures provided with suitable conducting-coils, and arranged upon opposite sides of and adapted to rock or roll partially about a common axis, and two magnets, permanent or electro, having their pole-pieces arranged in opposition to each other, 7 and shaped to permit said armatures to rock or roll incontact therewith, substantially as and for the purposes described.

The combination, in an electric apparatus, of two magnets arranged with their poles in opposition to each other, and two armatures, each provided with a coil of conductiiigwire, and arranged to rock or roll bodily from one magnetic field to another, and to come in close contact with said magnets, one armature mo"- ingtoward one magnet while the other armature is moving toward the other magnet, substantially as described.

4. In an electric apparatus, the combination of two magnets arranged with their poles in oppositionto each other, an armature arranged to rock or roll'bodily from one magnet to another and to come in close contact therewith, and a frame or lever arranged to be moved by the rolling contact therewith of said armature in passing from one magnet to the-other, substantially as and for the purposes described.

5. The combination of the magnets B and .8, provided with the curved p0le-p1 eces N,

N, S, and S, the levers O and O, and the armatures D and D, mounted in opposite ends of the lovers 0 and O, and arranged to rock or roll in contact with the opposite ends of said pole-pieces, substantially as described.

6. The combination of a lever or frame carrying an armature arranged to rock or roll from one magnetic field to another, two or more contact-ears mounted upon and adapted to move with said lever or frame, but insulated therefrom, and one or more commutatorsprings firmly secured at both ends to fixed supports, and adapted to be alternately curved in opposite directions by the movement of said contact-ears, substantially as described.

7. The combination of two magnets arranged with their poles in opposition to each other, one or more armatures arranged to rock or roll from one magnetic field to another, and one or more springs arranged to press said arma ture-into close contact with the poles of the magnets and with the non-magnetic filling pieces, substantially as described.

8. The combination of two magnets arranged with their poles in opposition to each other, two armatures arranged to rock or roll from one magnetic field to another,.and non-magnetic p ole-separating pieces of different widths, arranged and adapted to operate substantially as and for the purposes described.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, on this 13th day of January, A. D. 1883.

CHARLES o. r-EoK'. lVlVLH. CHAPMAN.

\Vitnesses:

E. A. HEMMENWAY, WALTE E. LOMBARD. 

